Station Passage - P-340

T-34C INSTRUMENTS

CHAPTER SIX

IMPORTANT!

Good heading control is probably the single most important

consideration for good tracking. If you do not maintain good

heading control, you will not know if the aircraft is off course due

to wind drift or due to poor basic airwork. As a result, it will be

more difficult to determine the exact aircraft heading required to

correct for drift.

Remember that radials converge; therefore, needle movement will

occur more rapidly close to the NAVAID. Limit heading changes

to within 10 of drift corrected heading when close to the NAVAID

to avoid overshooting the desired course.

Common Errors

Failure to establish the aircraft on the proper radial initially.

Poor heading control.

Failure to leave in a drift correction.

Excessive heading corrections close to the NAVAID.

Confusing the difference between intercepting and tracking a course. Use an

intercept to get on the desired course. Tracking cannot be commenced until the

aircraft is established on course.

Failure to utilize the CDI to note early course deviations.

606.

STATION PASSAGE

Reference: NIFM Part V, "Station Passage."

Station passage is defined as the moment the aircraft passes directly over or abeam the radio

facility.

VOR Station passage is noted at the first positive change of the TO/FROM indicator to

"FROM." It is important that this method of determining station passage be used each time. To

receive a FROM indication after station passage, the IND350 must have been set to a course that

resulted in a "TO" indication prior to station passage.

NOTE

The head of the VOR needle should fall below the 90 benchmark at

approximately the same time as the first positive "FROM"

indication on the IND350.

RADIO INSTRUMENT FLIGHT PROCEDURES 6-21